Hopefully this is enough to satisfy the license requirements.
Remove some of the "LOCAL CHANGE" comments as a result (ones about
the HeaderCache remain.)
Moving it inside gcc dir allows gcc to detect and build isl while
building gcc. It has dependencies on other libraries that would
need to be prebuilt if we build it ourselves.
This is one of a few steps in building gcc with isl and allowing graphite
optimization flags.
Partially from @jarekpelczar's work, but only certain pieces that
were needed, and the rest is either from earlier GCC patches
or is my own work.
With this, GCC 7 can now build Haiku.
I had jam crash in strange ways because a stack-allocatted aray was
overflowing. Double the limit, and add sanity checks with exit and clear
error messages in case it happens again.
Flex is not needed, and creates some confusion when building the
binutils on Haiku. Just remove all the checks from the configure script,
so it is never used.
"* LINK_SPEC: Pass "-shared" to the linker only if it was passed to gcc; output
position-independent executables by default;" is reverted to workaround a
link failure on gcc4 with binutils 2.26: add-ons objects would fail to link
against an executable (being no more a shared object). This is possibly temporary
until the need for executable as shared objects is fully reviewed.
Correct LINK_SPEC so it
* Sets appropriate dynamic-link options for any type of dynamically
linked executable, not only position-independent ones.
* Does not omit these options if "-pie" is specified by the user.
* Recognizes the "-static" option.
* Includes a hyphen previously missing from "--no-undefined".
Signed-off-by: Jérôme Duval <jerome.duval@gmail.com>
This aligns legacy gcc with the changes to gcc4 committed in 4192115 and
the two subsequent commits. It also disables legacy ld's default
behaviour of recursively resolving shared-library dependencies at link
time, preventing missing-library warnings during the build and aligning
ld's behaviour with that of more recent versions.
gcc2:
* CPP_SPEC: Replace non-existent command-line options with valid
equivalents.
* CC1_SPEC: Remove non-existent "no-fpic" option; add "fno-pic" and
"fno-PIC" as options that disable the generation of
position-independent code; use "-fPIC" by default.
* LINK_SPEC: Pass "-shared" to the linker only if it was passed to gcc;
output position-independent executables by default, exporting all
symbols to match the behaviour of "-shared"; when building a
dynamically linked executable, do not recursively add shared libraries
as dependencies but do allow unresolved symbols in them; specify
"-Bsymbolic" only when building a shared library.
* All: Wrap lines at 80 columns; use more compact notation where
available.
ld:
* Do not recursively resolve shared-library dependencies when building
an executable if the "--no-add-needed" and "--allow-shlib-undefined"
options are in effect. This effectively backports binutils commits
8fbb09e and 4706eab.
Signed-off-by: Jérôme Duval <jerome.duval@gmail.com>
